There are several things that can cause your 1993 Nissan 300 to idle rough. The most common cause is dirty spark plugs. Bad spark plug wires can also cause the problem.
my 1990 300zx is idling rough what could cause this?
A PCV or connecting hose problem can cause great issues with a 1997 Nissan pickup idling. In fact, this can keep it from running, even if it does start, and the engine turns over.
mass airflow sensor of head tip sensor could also be catalytic converter
The most common cause of rough idling would be a bad or clogged fuel injector. Also look for the hose on your EGR valve. They tend to come off in hot weather. If the hose comes off the engine will definitely run rough. I had to put a small hose clamp on mine to keep it from comming off. Spiritchsr1
No. The idler pulley only maintains tension on the serpentine belt. A faulty idler pulley can cause noise and a loose tensioner arm can cause belt slipping but other than having a similar name, it has nothing in common with engine idling.
Yes it could and it will cause rough idling and a missing when giving it gas.
Rough idling is whenever the vehicle's motor "misses" or does not fire causing an imbalance and a loss of rotation reducing the motor's power and causing excessive shaking.
300zx twin turbo lots of black smoke and running rough
I had a similar problem and it was my coil pack
One of the reasons for a 2003 Nissan Sentra to run rough and stall out when it comes to stop is a bad oxygen sensor. Another cause for the running rough could also be a dirty air cleaner.
Motor is idling rough.
timing off